mgo操作mongodb

mgo基本使用:

http://labix.org/mgo

安裝

# go get gopkg.in/mgo.v2

package main

import (
        "fmt"
	"log"
        "gopkg.in/mgo.v2"
        "gopkg.in/mgo.v2/bson"
)

type Person struct {
        Name string
        Phone string
}

func main() {
		//mongodb連接uri
		//格式為[mongodb://][user:pass@]host1[:port1][,host2[:port2],...][/database][?options]
        session, err := mgo.Dial("mongodb://cord:123456@127.0.0.1:27010/keymap")
        if err != nil {
                panic(err)
        }
        defer session.Close()

        // Optional. Switch the session to a monotonic behavior.
        session.SetMode(mgo.Monotonic, true)

        c := session.DB("test").C("people")
        
        //增加記錄
        err = c.Insert(&Person{"Ale", "[phone]"},
	               &Person{"Cla", "[phone]"})
        if err != nil {
                log.Fatal(err)
        }
        result := Person{}
        //普通查詢
        err = c.Find(bson.M{"name": "Ale"}).One(&result)
        //正則匹配(模糊查詢),其中"$options":"$i"表示忽略大小寫
        //regexStr = "A" 
        //err = c.Find(bson.M{"name":bson.M{"$regex" : regexStr, "$options":"$i"}}).All(&result)
        if err != nil {
                log.Fatal(err)
        }
        fmt.Println("Phone:", result.Phone)
        
        //刪除記錄
        err = c.Remove(bson.M{"name":"Ale"})  //刪除單條,如果有多條，默認順序第一條
	    _, err = c.RemoveAll(bson.M{"name":"Ale"}) //刪除所有查找的
	    if err != nil {
		  fmt.Println(err)
	    }
}